PGA Tour members who have played in at least 15 FedEx Cup events in the 2017-18 season were eligible to vote.

Rumours of an argument between Koepka and world number one Johnson at the Ryder Cup, which were denied at the time, have since been confirmed by US captain Jim Furyk.

“Whatever altercation started, or what happened, it was very brief,” Furyk said. “They’re like brothers. Brothers may argue, brothers get into it. But they’re as close as they’ve ever been, and it really had no effect on either one of them.”